Fountain pen valve



Nov. 1937. A. N. ANDREWS 2,098,528

FOUNTAIN PEN VALUE Filed May 23. 1936 INVENTOR.

ATTORNEY.

Patented Nov. 9, 1937 UNITED STATES PATENT OFFICE l` Claim.

My invention relates to a fountain pen, and

more particularly to a non-leaking fountain pen.

and is a fountain pen valve which does not require the ink container for a member in its construction. Its principal objects are:

First-To prevent the leaking of the inl: from the ink container when the cap is screwed into place over the point.

Second-To make its application possible in fountain pens which do not use the rubber sac as a direct ink container.

Third.-To make its application possible in fountain pens which do not use a rubber sac.

Fourth-To make a. shut oil' member in a fountain pen independent from the ink container.

Fifth-To be simple, eflicient and durable.

Sixth- To be susceptible of economical manufacture.

zo In attaining my objects, I change the general structure of the current fountain pen very little, the principal dierence being that in my improved pen, provision is made in the middle portion of the feed channel for valve and band seats. Then a band made of soft, flexible, springy and resilient material is stretched and mounted in the band seat and over the valve seat.

A press button, preferably spherical, is mounted over the band and the valve seat, and is movably held in a valve opening in the pen barrel, for instance, by the walls thereof. The band and the walls of th'e feed channel seal the`press button and the valve openin,r from the ink in the ink container, feed channel and valve seat, thus making the valveindependent from the ink container and also appliable in fountain pens which have no rubber sac adjacent to the feed channel.

When. the cap is not in place over the point the outer portion of the press button extends beyond the outer wall of the barrel,and in the sliding movement into the place over the point the walls of the cap force the button into the valve seat against the band,a portion of the band under the pressure stretches and fills the valve seatthus preventing the ink from the coni tainer and the upper portion of the feed channel to pass through into the lower portion of the feed channel. y I

When thc pressure against the button and the band is removed, the latter resumes its original 5 position, mounted over the valve seat, from thus restoring free passage for ink from the container to the lower portion of the feed channel via channels upper portion and the valve seat.

The features of this invention for which the protection of Letters Patent of the United States is desired. are collectively grouped inthe claim concluding this specincation.

In the drawing, which illustrates one specific form of my invention, the ligure is a -transverse section of a fountain pen equipped with my improvement. Y

Referring to the drawing, the figure shows a fountain pen of one particular type. this being 5 composed of the head l, feed element 5, barrel l, valve press button (bali) i0, valve barrel opening Il, feed channel 6, 1 and 8 (1 and i being the lower portion, and O-the upper portion thereof),

valve band and the bandseat 3A, and valve 10' seat 9.

In equipping this pen with my improvement the valve seat 9 is made in the shouldered upper portion ofthe head 4 and the feed channel 6, 1 and l, and divides the latter into the lower por- 15 tion 1 and 6, and the upper portion 8,-and the band 3A is made of soft, flexible, resilient and springy material capable to stretch, and is stretched and mounted in the band seat over the valve seat 9. The valve press button may consist 20 of a ball I0, which in the normal writing condition of the pen structure is positioned as indi--v cated on Flg.\3, where the resiliency of the material of the band 3A tends to push the ball I0 outwardly through a frusto-conical opening Il 25 formed in the barrel I,-and the opening Il is of smaller diameter than ball l0 thus preventing f the latter to fall out.

As shown on the figure, the opening Il and ball I0 are sealed from the ink container, valve 30 seat l and channel 6, 1 and 8, by the band 3A' and walls of the feed channel B, 1 and 8.

While specific embodiments of this invention are hereinshown and described, it is to be clearly,r understood that variationswithin the scope of 35 the accompanying claim, may be resorted to without jeopardizing my patent protection.

Having fully described my invention, what I claim is:

In a fountain pen a sacles's shut off valv'e which 40 is independent` separated and sealed' from pen ink container, and includes in combination a tubular band of soft, flexible, stretching and springy material mounted over the middle section of feed channel walls and a valve seat. and 45 the band is not extended into 'the ink container, and is not a part thereof,and a valve seat mounted in the feed channel and separated from the ink container by the upper section of the feed channel and walls thereof,and a press button 50 mounted in an opening 'inthe lower section of the pen over the tubular band and the valve seat,and the opening and the press button are insulated and sealed from the ink and the ink container by the tubular band and walls of the feed channel.

ANATOL N. ANDREWS. 

